Month	Thousands Of Long Tons
1919-01-01	182.000
1919-02-01	327.000
1919-03-01	520.000
1919-04-01	652.000
1919-05-01	707.000
1919-06-01	654.000
1919-07-01	615.000
1919-08-01	554.000
1919-09-01	493.000
1919-10-01	427.000
1919-11-01	341.000
1919-12-01	296.000
1920-01-01	276.000
1920-02-01	288.000
1920-03-01	235.000
1920-04-01	290.000
1920-05-01	300.000
1920-06-01	295.000
1920-07-01	283.000
1920-08-01	236.000
1920-09-01	188.000
1920-10-01	244.000
1920-11-01	328.000
1920-12-01	507.000
1921-01-01	665.000
1921-02-01	654.000
1921-03-01	685.000
1921-04-01	703.000
1921-05-01	693.000
1921-06-01	699.000
1921-07-01	702.000
1921-08-01	638.000
1921-09-01	599.000
1921-10-01	522.000
1921-11-01	511.000
1921-12-01	548.000
1922-01-01	580.000
1922-02-01	546.000
1922-03-01	539.000
1922-04-01	445.000
1922-05-01	334.000
1922-06-01	309.000
1922-07-01	245.000
1922-08-01	159.000
1922-09-01	151.000
1922-10-01	157.000
1922-11-01	188.000
1922-12-01	231.000
1923-01-01	275.000
1923-02-01	279.000
1923-03-01	246.000
1923-04-01	265.000
1923-05-01	340.000
1923-06-01	463.000
1923-07-01	626.000
1923-08-01	705.000
1923-09-01	773.000
1923-10-01	831.000
1923-11-01	896.000
1923-12-01	922.000
1924-01-01	918.000
1924-02-01	888.000
1924-03-01	883.000
1924-04-01	945.000
1924-05-01	1010.00
1924-06-01	1054.00
1924-07-01	1053.00
1924-08-01	1002.00
1924-09-01	919.000
1924-10-01	895.000
1924-11-01	868.000
1924-12-01	847.000
1925-01-01	829.000
1925-02-01	832.000
1925-03-01	784.000
1925-04-01	829.000
1925-05-01	830.000
1925-06-01	799.000
1925-07-01	775.000
1925-08-01	719.000
1925-09-01	644.000
1925-10-01	581.000
1925-11-01	531.000
1925-12-01	512.000
1926-01-01	544.000
1926-02-01	515.000
1926-03-01	516.000
1926-04-01	571.000
1926-05-01	650.000
1926-06-01	711.000
1926-07-01	772.000
1926-08-01	742.000
1926-09-01	682.000
1926-10-01	638.000
1926-11-01	626.000
1926-12-01	645.000